A simple jet carburettor is required to supply 5.8 kg of air per minute and 0.8 kg per minute of fuel of density 880 kg/m3. The air is initially at 1.013 bar and 27°C. Calculate the îhroat diameter of the choke for an air flow velocity of 98 m/3. Take the velocity coefficient for the venturi to be 0.85) and the cocfficient of discharge of the main_fyel jet to be 0.55) Assume isentropic flow and the tlow to be compressible. Ifthe pressure drop across the fuel metering orifice is 0.60 of that at the choke, calculate the orifice diameter.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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A simple jet carburettor is required to supply 5.8 kg of air per minute and 0.8 kg per minute of fuel of
density 880 kgm3. The´air is initially at 1.013 bar and 27°C. Calculate the throat diameter of the choke
for an air flow velocity of 98 m/§. Take the_velocity coefficient for the venturi to be 0.85) and the
coefficient of discharge of the main_fyel jet to be 0.55) Assume isentropic flow and the tlow to be
compressible. If the pressure drop across the fuel metering orifice is 0.60 df that at the choke, calculate the
orifice diameter.
.
Transcribed Image Text:A simple jet carburettor is required to supply 5.8 kg of air per minute and 0.8 kg per minute of fuel of density 880 kgm3. The´air is initially at 1.013 bar and 27°C. Calculate the throat diameter of the choke for an air flow velocity of 98 m/§. Take the_velocity coefficient for the venturi to be 0.85) and the coefficient of discharge of the main_fyel jet to be 0.55) Assume isentropic flow and the tlow to be compressible. If the pressure drop across the fuel metering orifice is 0.60 df that at the choke, calculate the orifice diameter. .
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